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Frequently Asked Questions

Product

What should I look for when buying a diamond?

Look for the 4Cs: 

4C mean - Cut, Color, Clarity, and Carat weight.
 • A well-cut diamond sparkles more 7 has more value. 
Color: Less color = higher value. Grades go from D (best) to Z.
Clarity: Fewer natural flaws = more beauty. 
Carat: This is the weight (size). Bigger isn’t always better—cut and clarity matter too.
 
 These determine the diamond’s quality and value. 
What are the 4Cs of diamonds?

The 4Cs stand for Cut, Color, Clarity, and Carat. These are the universal standards for assessing a diamond's quality.

Is a GIA-certified diamond better?

Yes. GIA (Gemological Institute of America) certification ensures the diamond has been evaluated objectively and meets trusted grading standards.

How can I tell if a diamond is real or natural?

The only reliable way is to test with a trusted machine like De Beers SYNTHdetect or use GIA/IGI certification. It is generally difficult to differentiate between natural and lab-grown diamonds (CVD or HPHT) with the naked eye, even for experienced gemologists. Glorious Diamonds, own the world best CVD testing machine, we test every stone and provide full proof it’s 100% natural.

What is the best diamond cut for sparkle?

The round brilliant cut is considered the best for maximum sparkle due to its ideal proportions and facet pattern.

What diamond color is best?

D-color diamonds are the most colorless and valuable, but G-H range offers great value with minimal visible color.

Does clarity affect a diamond sparkle?

Yes, but not as much as cut. Minor inclusions ( VVS VS ) are often invisible to the naked eye but SI & I clarity can affect brilliance.

Why are some diamonds cheaper than others of the same carat?

Price differences depend on cut, clarity, color, shape, fluorescence, and certification. Two diamonds with the same carat can vary greatly.

What is diamond fluorescence?

Fluorescence refers to how a diamond reacts under UV light. It can affect both appearance and price, strong fluorescence may make diamonds look hazy and reduce their value. Compared to diamonds with no fluorescence, those with faint, medium, strong, and very strong fluorescence are typically about 5%, 10%, 15%, and 20% cheaper, respectively.

Which diamond shape is the most popular?

The round brilliant cut is the most popular, followed by cushion, oval, heart and pear shapes.

Where is the best place to buy diamonds online?

To find the best place to buy diamonds online, consider these essential factors:

  • Reputation: Choose a trusted seller with positive reviews and a solid track record in the diamond industry.

  • Quality & Certification: Look for certified diamonds from respected labs like GIA, HRD, or IGI to ensure authenticity and accurate grading.

  • Selection: Opt for sites with a wide variety of shapes, sizes, and cuts to match your preferences.

  • Pricing & Value: Compare prices across platforms for competitive rates. Prioritize transparency and overall value, including quality and service.

  • Customer Service: Choose platforms with responsive, knowledgeable support for a smooth buying experience.

  • Secure Transactions: Ensure the site uses secure payment systems and protects your personal and financial data.

Glorious Diamonds is one of the most trusted brand in Gems & Jewelry industry.

What type of metal should I choose for a diamond ring?

White gold, platinum, yellow gold, and rose gold are popular. Choose based on skin tone, style, and design.

What are the diamond clarities ?
Diamond Clarity Grades (from highest to lowest)
 
1. FL (Flawless) & IF (Internally Flawless):
No inclusions or blemishes. Extremely rare.
 
2. VVS1 & VVS2 (Very Very Slightly Included):
Tiny inclusions, extremely hard to see under 10x magnification.
 
3. VS1 & VS2 (Very Slightly Included):
Minor inclusions, difficult to see by naked eye but visible under 10X glass.
 
4. SI1 & SI2 (Slightly Included):
Inclusions are visible under magnification, SI2- SI3 visible by naked eye.
 
5. I1, I2, I3 (Included):
Inclusions are clearly visible, may affect sparkle and durability.
What are the diamond colors ?
Diamond Color Grades (D to Z Scale)
 
Diamonds are graded from D (colorless) to Z (light yellow or brown):
 
1. D–F: Colorless
Highest quality, rare and valuable. No noticeable color.
 
2. G–H: Near Colorless
Slight color, but still looks white—great value for money.
 
3. I-K : Faint Color
Noticeable yellow tint, especially in larger diamonds.
 
4. L–Z: Light Color
Obvious color. Less common for fine jewelry.

Contact Us


Glorious Diamonds Co., Ltd.

919/503-504, 43rd floor,
Jewelry Trade Center Building,
Silom Road, Kwaeng Silom, Khet Bangrak
Bangkok 10500 Thailand

Customer Service +669 421 99999
                                +669 469 09000

Office +6626302728

Email sales@gloriousdiamonds.net

         

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